package main.java.jdbc;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;

public class JDBCDemo3 {
    public static void main(String[] args) throws Exception{
        Class.forName("com.mysql.cj.jdbc.Driver");
        Connection connection = DriverManager.getConnection(
                "jdbc:mysql://localhost:3306/tedu?characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai&rewriteBatchedStatements=true",
                "root",
                "1234");
        System.out.println("成功连接数据库");

        Statement statement = connection.createStatement();
        String sql = "UPDATE useinfo SET password ='666666' WHERE username = '张三'";
        int num = statement.executeUpdate(sql);
        System.out.println(num >0?"更新成功":"更新失败");
        connection.close();
    }
}
